Lille, France (CNN) -- Roger Federer and Stan Wawrinka each faced questions heading into Switzerland's Davis Cup final in France. 

For Federer, how would his tender back hold up? 

For Wawrinka, would he recover after a tough -- and contentious -- loss to his higher-profile Swiss at the World Tour Finals in London last week? 

We got our answers Friday at the Stade Pierre Mauroy on a record setting day in Lille -- but for once Federer wasn't the one rewriting the history books. 

In front of the largest ever tennis crowd for a pro match -- at 27,432 it eclipsed the 27,200 that turned up to watch Spain beat the U.S. in a converted Seville bullring in the 2004 Davis Cup final -- Federer not only fell to Gael Monfils but couldn't put up much of a fight. 

The 6-1 6-4 6-3 result against Monfils -- who piped down his histrionics -- marked his most lopsided defeat in 45 singles matches in the competition. 

"You accept the fact that you're playing the way you feel," Federer told reporters. "But it wasn't all negative. I started to feel better as the match went on. That's very encouraging, I must say." 

Also encouraging for Federer and the Swiss, Wawrinka thumped a listless Jo-Wilfried Tsonga 6-1 3-6 6-3 6-2 to begin the day. 

Federer's performance, coupled with France's apparent advantage in Saturday's doubles, means it's the home team who'll be happier come the end of play. 

One of the two major titles to elude Federer in his glittering career is a Davis Cup crown and how disappointed he must have been that on his debut in a Davis Cup final he was at less than full strength.  What are the answers to this following set of questions: 1. Where did the event take place?
2. which town?
3. what was the name of the stadium?
4. Were they playing football?
5. what were they playing?
6. What is Federer's first name?
7. had he won a Davis cup before?
8. did he win this time?
9. who beat him?
10. what year was this?
11. What was his concern going into the contest?
Answer: 1. France
2. Lille
3. converted Seville bullring
4. No
5. tennis
6. Roger
7. No
8. No
9. Gael Monfils
10. 2004
11. would his back hold up

Preventing obesity and smoking can save lives, but it doesn't save money, reported researchers. "It was a small surprise, for it is against the common belief," said Pieter Van Baal, who led the study. "But it makes sense. If you live longer, then you cost the health system more." 

The researchers found that from age 20 to 56, obese people racked up the most expensive health costs. But on average, healthy people lived 84 years. Smokers lived about 77 years, and obese people lived about 80 years. Smokers and obese people tended to have more heart disease than healthy people. Therefore in the long run, the thin and healthy group cost about $417, 000, from age 20 on. Smokers cost about $326, 000 and obese people $371, 000. 

"The result throws a bucket of cold water onto the idea, based on guesswork, that obesity is going to cost trillions of dollars," said Patrick Basham, a professor of health politics. "If we're going to worry about the future of obesity, we should stop worrying about its financial impact," he said. 

"The benefits of obesity prevention may not be seen immediately in terms of cost saving in tomorrow's budget, but there are long-term gains," said Van Baal. "These are often immeasurable when it comes to people living longer and healthier lives." In the meanwhile, he said that governments should recognize that successful smoking and obesity prevention programs mean that people will have a longer chance of dying of something more expensive later in life. 

"Lung cancer is a cheap disease to treat because people don't survive very long. But if they are old enough to get Alzheimer's one day, they may survive longer and cost more. We are not advising that governments stop trying to prevent obesity," Van Baal said. "But they should do it for the right reasons." What are the answers to this following set of questions: 1. What age group of obese people had the most expensive health costs?
2. How long did smokers live?
3. How about obese people?
4. What was the average cost for Smokers?
5. What about the thin and healthy group?
6. Patrick Basham says obesity will cost how much?
7. How long did healthy people live on average?
8. What was the role of Patrick Basham?
9. Basham said we should stop worrying about what?
10. Does obesity prevention have immediate benefits?
Answer: 1. 20 to 56,
2. 77 years
3. 80 years
4. $326, 000
5. $417, 000
6. that obesity is going to cost trillions of dollars
7. 84 years
8. a professor of health politics
9. stop worrying about its financial impact
10. The benefits of obesity prevention may not be seen immediately

(CNN) -- Hilary Duff says her new album is "very positive" but admits that it started out "a lot heavier and a lot darker" because of the separation from her husband, Mike Comrie. 

"I'm separated from my husband right now, which has been a very difficult thing to go through," she told Billboard's "Pop Shop" podcast. "In the beginning, the album was a lot heavier and a lot darker, because I had to get that out. Once I did get that out, a lot of fun came." 

Duff married Comrie, a former pro hockey player, in 2010 after dating for three years. Their son, Luca, was born in 2012. Duff and Comrie announced their separation in January. 

Duff, 26, admits that she's "nervous" after being away from music for seven years. Her just-released single, "Chasing the Sun," is from her still-untitled album, which will be her first studio release since 2007's "Dignity." 

She says she first started thinking of new material when she was pregnant with her son. After having the child and taking another year, she was even more anxious. 

"I felt like I was missing a big part of myself," she said. 

Duff established a successful singing career on the heels of her popular Disney show, "Lizzie McGuire," which aired from 2001 to 2004. She spent most of her teenage years touring and says that turning 20 was a big factor in leaving the road. 

"It was time for me to be a person, and the break just ended up being a long time," she said.  What are the answers to this following set of questions: 1. Who has a new album?
2. Who was she married to?
3. What was his job?
4. How long did they date?
5. Are they still together?
6. When did that happen?
7. Do they have a son?
8. His name is?
9. What song did she put out recently?
10. Does the album have a title?
11. What  was her previous song?
12. When was that out?
13. What program was she on?
14. On what channel?
15. When?
16. What did she do after that?
17. How many years was she apart from music?
18. Who interviewed her
19. Is her album negative?
20. Was it always that way?
Answer:
1. Hilary Duff
2. Mike Comrie
3. pro hockey player
4. three years
5. separated
6. unknown
7. Yes
8. Luca
9. Chasing the Sun
10. still-untitled album
11. Dignity
12. 2007
13. Lizzie McGuire
14. Disney
15. 2001 to 2004
16. took a break
17. seven years
18. CNN
19. very positive
20. no